issue with template

i have a really strange situation with the template,
i work on darked -red theme..
i changed the body fotn color as #000 !important; and the default was #66666;
and every 3-4 days the font color changed on default,

also i changed on the sidebar-right the width from 25%(default) to 35% and again after 3-4 days the width changed again to defauylt ??

do you know why the template saved my changies?? or if i have to do something more for this??
thanks in advance!

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